HashTable Dictionary

遍历 HashTable Dictionary 

Dictionary<int, string> food = new Dictionary<int, string>();   // HashTable<int, string> food = new HashTable<int, string>();
food.Add(1, "A");
food.Add(2, "B");
IDictionaryEnumerator myEnumerator=food.GetEnumerator();
string strfoodlist = "";
while (myEnumerator.MoveNext())
{
 strfoodlist = strfoodlist + "\n\n" + myEnumerator.Key.ToString();
 strfoodlist = strfoodlist + ":\t" + myEnumerator.Value.ToString();
}
Console.WriteLine(strfoodlist);

排序 HashTable Dictionary

 static void Main(string[] args)
        {
            Console.WriteLine();
            Console.WriteLine("Hashtable:");
            Hashtable ht = new Hashtable();
            ht.Add("321", "fdsgsags");
            ht.Add("acb", "test test");
            ht.Add("1123", "lslgsgl");
            ht.Add("2bcd13", "value");
            foreach (DictionaryEntry de in ht)
            {
                Console.WriteLine("键名：" + de.Key + " 键值：" + de.Value);
            }

            Console.WriteLine();
            Console.WriteLine("Dictionary:");
            Dictionary<string, string> dic = new Dictionary<string, string>();
            dic.Add("321", "fdsgsags");
            dic.Add("acb", "test test");
            dic.Add("1123", "lslgsgl");
            dic.Add("2bcd13", "value");
            foreach (KeyValuePair<string, string> item in dic)
            {
                Console.WriteLine("键名：" + item.Key + " 键值：" + item.Value);
            }

            Console.WriteLine();
            Console.WriteLine("ArrayList:");
            ArrayList al = new ArrayList(dic.Keys); //或者 ArrayList al = new ArrayList(ht.Keys); 
            al.Sort();
            foreach (string skey in al)
            {
                Console.WriteLine("键名：" + skey + " 键值：" + dic[skey]); //或者 Console.WriteLine("键名：" + skey + " 键值：" + ht[skey]);
            }

            Console.Read();
        }

复制 Dictionary

Dictionary<string, int> copy = new Dictionary<string, int>(OldDic);